The YouTube is the latest social media platform to launch a campaign against the spread of conspiracy theories QAnon.
The company said it would ban the reproduction of material aimed at an individual or group with conspiracy theories that have been used to justify violence, such as QAnon. Already the Facebook and Twitter have prevented QAnon from their platforms.
The QAnon movement claims that the US president <br><br>Donald Trump fights a group of pedophiles who worship Satan.
The FBI issued a warning last year about "domestic extremists based on conspiracy theories" and identified QAnon as a potential domestic extremist threat.
The YouTube announcement
YouTube he said that it had "removed tens of thousands of QAnon videos and cut hundreds of channels" in accordance with existing content rules.
However, social media said that it was necessary to take "another step to reduce hatred and harassment."
"Today we are further expanding our hate and harassment policies to ban content aimed at an individual or group with conspiracy theories that have been used to justify violence in the real world," he said.
The new YouTube rules come three years after QAnon first appeared. The movement has been linked to many false claims that have spread to Internet, with baseless accusations usually addressed to Democrats.
President Trump has used the Twitter feed, to promote baseless allegations made by accounts linked to QAnon conspiracy theories.
During a televised meeting of voters on Thursday, the president was asked about the conspiracy theory and replied: "I know nothing about QAnon. I just know that they are very much against pedophilia, they are fighting it very hard. "
Supporters of President Trump have been seen holding flags and T-shirts bearing the QAnon symbol at rallies ahead of the November 3 presidential election.
The Qannon is a widely unfounded conspiracy theory that claims that President Trump is fighting an illegal network of politicians, businessmen, and the elite in general, which often includes satanic conspiracies and child trafficking.
QAnon launched in October 2017 on 4chan. An anonymous user left a series of posts on 4chan claiming to be involved in an undercover investigation team led by President Trump.
They claimed to have top security access to their government USA, known as “Q clearance” - hence the name QAnon. This user's messages became known as "Q drops" or "breadcrumbs", often written in encrypted language with slogans, promises and topics in favor of Trump.